XTAR Charger for Cylindrical Lithium-Ion Batteries 18650 X4
X4 is a professional processor charger with three-stage TC/CC/CV charging processor and LCD display.
Charges 1-4 Li-ion 3.6/3.7V and Ni-MH cells of any capacity in sizes AAA/R03, AA/R6, R14/C, 14500, 14650, 16340, 17500, 17670, 18350, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650.
The Xtar X4's backlit VA LCD display shows up-to-date information about the charger's operating status: battery charge expressed in mAh, battery voltage, charging current, and internal cell resistance.
What is the TC/CC/CV charging method? It is a three-stage lithium-ion cell charging process that ensures that the cell is kept in good condition by charging with the right current at each stage and completing the charging process at the right time.
The different stages of the TC/CC/CV process are:
• TC phase: discharged cells below 2.9V are "awakened" by a lower current.
•DC phase: when 2.9V is reached, the cell is charged with a constant current of 1x 2A / 2x 1A / 2x 0.5A (for Ni-MH and Li-ion cells up to 65mm in length).
• CV phase: When the cell is almost charged, the charger starts charging with a decreasing current until it reaches the voltage of 4.2V in the cell. When 4.2V is reached, the charging process is complete - the battery is fully charged.
The batteries supplied are reserved in the charger will undergo a natural self-discharge process. Charging will resume when the battery voltage drops below 3.9V.
Box Contents:
1x XTAR Charger for Cylindrical Lithium-Ion Batteries 18650 X4
